@misc{indiciae51041408196b,
  title = {Coal resources of Upper Cretaceous Fruitland Formation in the Southern Ute Indian Reservation, southwestern Colorado},
  author = {Dorothy T. Sandberg},
  year = {1990},
  doi = {10.3133/pp1505d},
  url = {https://pubs.usgs.gov/publication/pp1505D},
  note = {Source identifier: pp1505D}
}